^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Based on work by Alan Hourihane
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/mvme16xhw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/scsi_transport_spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "53c700.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static struct scsi_host_template mvme16x_scsi_driver_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) .name = "MVME16x NCR53c710 SCSI",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .proc_name = "MVME16x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .this_id = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static struct platform_device *mvme16x_scsi_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int mvme16x_probe(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct Scsi_Host * host = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct NCR_700_Host_Parameters *hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (!MACH_IS_MVME16x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) printk(KERN_INFO "mvme16x-scsi: detection disabled, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) "SCSI chip not present\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (hostdata == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) printk(KERN_ERR "mvme16x-scsi: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) "Failed to allocate host data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Fill in the required pieces of hostdata */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) hostdata->base = (void __iomem *)0xfff47000UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) hostdata->clock = 50; /* XXX - depends on the CPU clock! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) hostdata->chip710 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) hostdata->dmode_extra = DMODE_FC2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) hostdata->dcntl_extra = EA_710;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) hostdata->ctest7_extra = CTEST7_TT1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* and register the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) &dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (!host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) printk(KERN_ERR "mvme16x-scsi: No host detected; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) "board configuration problem?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) host->this_id = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) host->base = 0xfff47000UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) host->irq = MVME16x_IRQ_SCSI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) goto out_put_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Enable scsi chip ints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) volatile unsigned long v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /* Enable scsi interrupts at level 4 in PCCchip2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) v = in_be32(0xfff4202c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) v = (v & ~0xff) | 0x10 | 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) out_be32(0xfff4202c, v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) platform_set_drvdata(dev, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) scsi_scan_host(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) out_put_host:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) kfree(hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static int mvme16x_device_remove(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct Scsi_Host *host = platform_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Disable scsi chip ints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) volatile unsigned long v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) v = in_be32(0xfff4202c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) v &= ~0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) out_be32(0xfff4202c, v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) scsi_remove_host(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) NCR_700_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) kfree(hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) free_irq(host->irq, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static struct platform_driver mvme16x_scsi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .name = "mvme16x-scsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .probe = mvme16x_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .remove = mvme16x_device_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static int __init mvme16x_scsi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) err = platform_driver_register(&mvme16x_scsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) -1, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (IS_ERR(mvme16x_scsi_device)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) platform_driver_unregister(&mvme16x_scsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return PTR_ERR(mvme16x_scsi_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static void __exit mvme16x_scsi_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) platform_device_unregister(mvme16x_scsi_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) platform_driver_unregister(&mvme16x_scsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) module_init(mvme16x_scsi_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) module_exit(mvme16x_scsi_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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